120997 has 2 divisors, whose sum is σ = 120998. Its totient is φ = 120996.

The previous prime is 120977. The next prime is 121001. The reversal of 120997 is 799021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103041 + 17956 = 321^2 + 134^2 .

It is an emirp because it is prime and its reverse (799021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60498 + 60499.

It is an arithmetic number, because the mean of its divisors is an integer number (60499).

2¹²⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

120997 is a deficient number, since it is larger than the sum of its proper divisors (1).

120997 is an equidigital number, since it uses as much as digits as its factorization.

120997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 120997 is about 347.8462303950. The cubic root of 120997 is about 49.4604656616.

The spelling of 120997 in words is "one hundred twenty thousand, nine hundred ninety-seven".